You must not suppose, because I am a man of letters, that I never tried to earn an honest living.

The price of ability does not depend on merit but on supply and demand.

Great art is never produced for its own sake. It is too difficult to be worth the effort.

No man can be a pure specialist without being in the strict sense an idiot.

Nothing remains beautiful and interesting except thought, because the thought is the life.

A man is like a phonograph with half-a-dozen records. You soon get tired of them all; and yet you have to sit at table whilst he reels them off to every new visitor.

Science becomes dangerous only when it imagines that it has reached its goal.